Officers are hoping to track down this man and speak to him in connection to racist swastika and anti-semitic stickers going up on the tube.
During the rush hour, British Transport Police received reports of the stickers at Piccadilly Circus and Covent Garden station.
The calls to police, between January 10-12, have sparked an appeal to trace this man from CCTV image so people can speak to him about their investigation.
On the stickers had Nazi terminology - including swastikas - drawn on and so far seven stickers have been identified and linked to this investigation.
Investigating officer Ben Hurley from British Transport Police said: "There is no place for intolerance and racism in our society and we take a firm stance against anyone who carries out these offences.
"All instances of hate crime are taken extremely seriously and we would actively encourage anyone who has spotted these stickers on public transport to contact us.
"Our enquiries are ongoing and I am hopeful that someone will recognise the man in the CCTV images."
Anyone with any information is asked to send a text to 61016 or call 0800 40 50 40 quoting reference 174 of 07/02/2017.
Alternatively, contact Crimestoppers anonymously on 0800 555 111.
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